This chicken is an Isbar that is only a few months old. My hens hatched her(I think) out along with some other chicks so she has lived in the coop with the other chickens since birth. Just yesterday I found one of her fellow hatch mates dead. It made me very sad, she didn't show any symptoms. Today I noticed this girl showing signs of illness. She's lost weight, her eyes are goopy and there is pink around them, I don't think she's eating, and she is lethargic. I separated her from the other chickens and have her in the house. Does anyone have an idea about what this could be? What should I do?